icon Thyroid Function with Antibodies Blood Test
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Thyroid Function with Antibodies Blood Test
Thyroid Function Blood Test

About Description

  • this test helps you to get a full picture of your thyroid health
  • This test examines three thyroid hormones
  • Helps you to select the right treatment

Thyroid Function with Antibodies Blood Test

A doctor's comments are included in this test. If you do not require a doctor's comments then you can opt out. In selecting this option, you agree that you have a qualified clinician who can interpret your results.

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Using Antibodies, The Thyroid Function is a blood test that provides a comprehensive picture of your thyroid health by examining thyroid antibodies, free T3 & T4 levels and thyroid stimulating hormone (TSH).


Is it for you?

This best-selling Thyroid Function with Antibodies Blood Test helps you to get a full picture of your thyroid health.

Your weight, mood, energy level, skin, and hair may vary as a result of an overactive or underactive thyroid, which can also cause thyroid-related symptoms. Or you could be curious to find out if you, too, are susceptible to thyroid disease since a family member has had it.
By analysing three thyroid hormones, thyroglobulin, and thyroid peroxidase antibodies, this test can assist you in determining whether you may have a thyroid issue.

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Thyroid Hormones (3 Biomarkers)

A gland at the front of your neck called the thyroid makes hormones that aid in regulating your metabolism.

Your thyroid may generate too little or too many thyroid hormones, and either situation can cause crippling symptoms. Lethargy, weight gain, dry skin, and hair are typical symptoms of an underactive thyroid, while nervousness and anxiety are typical signs of an overactive thyroid, as well as weight loss.

Once detected, thyroid disorders can be treated, but even then, it's crucial to keep an eye on your thyroid hormone levels to make sure they stay at their ideal levels.


The thyroid is a gland located near the base of the neck that regulates several metabolic processes, including substrate turnover, heart function, muscle physiology, and energy expenditure.

Thyroid dysfunction can cause either overproduction of hormones (overactive) or underproduction of hormones (underactive), both of which can lower athletic performance. The pituitary gland produces Thyroid Stimulating Hormone (TSH), which stimulates the thyroid gland to create the thyroid hormones thyroxine (T4) and triiodothyronine (T3).

As part of a neuroendocrine cascade, thyroid hormone synthesis occurs. Thyrotropin releasing hormone (TRH) is released first in the hypothalamus, where it causes the pituitary to release thyroid stimulating hormone (TSH).

To release the hormones T3 and T4, this attaches to thyroid gland cells (thyroxine). Additionally, peripheral tissues convert T4 into T3, the thyroid hormone with greater activity.These hormones are essentially what regulate your body's metabolism.

Negative feedback loops typically maintain a tight balance between all of these levels. Thyroid hormone over- or under-secretion can be a sign of abnormal thyroid function. These disorders frequently have an autoimmune component, which can frequently be detected by looking at your thyroid antibodies in more sophisticated thyroid tests.

Free Thyroxine

One of the two hormones that the thyroid gland produces is thyroxine (T4). It accelerates the rate at which your metabolism functions.

The majority of T4 in the blood is bound to carrier proteins, but this test solely measures free, or unbound, T4, which is active in the body.

Free T3

The more active of the two thyroid hormones made by the thyroid gland is triiodothyronine (T3).

In the blood, the majority of T3 is protein-bound. The amount of T3 that is available to control metabolism and is free, or not bound to protein, is measured by free T3.

Autoimmunity (2 Biomarkers)

When your immune system misidentifies your own cells or tissues as "foreign," it begins to attack them, which is known as autoimmune disease.

The parts of your body that are being attacked distinguish a number of autoimmune disorders.

Thyroid disease (Hashimoto's Thyroiditis and Graves' Disease), systemic lupus erythematosus (lupus), and rheumatoid arthritis are examples of common autoimmune diseases.

Nobody is quite sure what causes an autoimmune illness, but it is commonly known that more women than men are affected and that your risk of getting one is increased if a family member has one or if you have already had one identified.Numerous signs of autoimmune disease might either continually be present or flare up occasionally with periods of remission.

Depending on which bodily systems are impacted by the condition, the symptoms change. While other illnesses, like lupus, affect a variety of body tissues, in certain situations the tissue affected is highly specific, such as the thyroid in the case of Hashimoto's thyroiditis.

Thyroglobulin Antibodies

This examination searches for antibodies to thyroglobulin, a thyroid-specific protein. Normal conditions prevent it from entering the bloodstream, but if your thyroid is inflamed or being attacked by your body's immune system, thyroglobulin can be released and antibodies can be found.

The majority of cases of thyroid disease are brought on by autoimmune diseases, in which the body's immune system attacks the thyroid gland.

As a result, the thyroid gland may produce more thyroid hormone (as in Graves' disease) or less thyroid hormone as the thyroid gland's cells gradually degenerate (as in Hashimoto's thyroiditis).

Thyroid Peroxidase Antibodies

The thyroid gland produces the enzyme thyroid peroxidase, which is crucial for converting T4 to the physiologically active T3.

This test looks for antibodies to thyroid peroxidase, a sign that the thyroid gland is being attacked by the body's immune system and losing its ability to function.

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